Three-axis particle impact probe
Abstract
Three-axis particle impact probes detect particle impact vectors along x-, y-, and z-axes by spherical probe head mounted on the outer end of a shaft that is flexibly mounted in silicone rubber at the top of a housing so as to enable motion imparted to the head upon impact to be transmitted to a grounded electrode secured to the shaft within the housing. Excitable electrodes are mounted in the housing in a fixed position, spaced apart from the ground electrode and forming, with the ground electrode, capacitor pairs. Movement of the ground electrode results in changes in capacitance, and these difference in capacitance are used for measurement or derivation of momentum vectors along each of the three axes. In one embodiment, the ground electrode is mounted at the base of the shaft and is secured to a silicone rubber layer at the top of the housing, providing for cantilevered movement. In another embodiment, the shaft is mounted at its mid point in a flexible bushing so that it undergoes pivotal movement around that point.
- Inventors:
-
- Morgantown, WV
- (Morgantown, WV)
- Issue Date:
- Research Org.:
- National Energy Technology Laboratory (NETL), Pittsburgh, PA, Morgantown, WV (United States)
- OSTI Identifier:
- 868457
- Patent Number(s):
- 5144251
- Assignee:
- United States of America as represented by United States (Washington, DC)
- Patent Classifications (CPCs):
-
G - PHYSICS G01 - MEASURING G01B - MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS
G - PHYSICS G01 - MEASURING G01P - MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- three-axis; particle; impact; probe; probes; detect; vectors; x-; y-; z-axes; spherical; head; mounted; outer; shaft; flexibly; silicone; rubber; top; housing; enable; motion; imparted; transmitted; grounded; electrode; secured; excitable; electrodes; fixed; position; spaced; apart; ground; forming; capacitor; pairs; movement; results; changes; capacitance; difference; measurement; derivation; momentum; axes; embodiment; base; layer; providing; cantilevered; mid; flexible; bushing; undergoes; pivotal; spaced apart; ground electrode; fixed position; silicone rubber; particle impact; probe head; pivotal movement; grounded electrode; three-axis particle; probes detect; /324/73/
Citation Formats
Fasching, George E, Smith, Jr., Nelson S., and Utt, Carroll E. Three-axis particle impact probe. United States: N. p., 1992.
Web.
Fasching, George E, Smith, Jr., Nelson S., & Utt, Carroll E. Three-axis particle impact probe. United States.
Fasching, George E, Smith, Jr., Nelson S., and Utt, Carroll E. Wed .
"Three-axis particle impact probe". United States. https://www.osti.gov/servlets/purl/868457.
@article{osti_868457,
title = {Three-axis particle impact probe},
author = {Fasching, George E and Smith, Jr., Nelson S. and Utt, Carroll E},
abstractNote = {Three-axis particle impact probes detect particle impact vectors along x-, y-, and z-axes by spherical probe head mounted on the outer end of a shaft that is flexibly mounted in silicone rubber at the top of a housing so as to enable motion imparted to the head upon impact to be transmitted to a grounded electrode secured to the shaft within the housing. Excitable electrodes are mounted in the housing in a fixed position, spaced apart from the ground electrode and forming, with the ground electrode, capacitor pairs. Movement of the ground electrode results in changes in capacitance, and these difference in capacitance are used for measurement or derivation of momentum vectors along each of the three axes. In one embodiment, the ground electrode is mounted at the base of the shaft and is secured to a silicone rubber layer at the top of the housing, providing for cantilevered movement. In another embodiment, the shaft is mounted at its mid point in a flexible bushing so that it undergoes pivotal movement around that point.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1992},
month = {1}
}
Works referenced in this record:
Flow Measurement of Coarse Particles in Pneumatic Conveyers
journal, January 1977
- Mann, Uzi; Crosby, E. J.
- Industrial & Engineering Chemistry Process Design and Development, Vol. 16, Issue 1
An impact probe for local analysis of gas—solid flows
journal, March 1983
- Raso, G.; Tirabasso, G.; Donsì, G.
- Powder Technology, Vol. 34, Issue 2
Investigation of particle velocities in a gas-solid system
journal, February 1986
- Smith, R. A.; Klinzing, G. E.
- AIChE Journal, Vol. 32, Issue 2
Local particle velocity measurements with a laser anemometer in an upward flowing gas—solid suspension
journal, May 1976
- Birchenough, A.; Mason, J. S.
- Powder Technology, Vol. 14, Issue 1
Turbulent flow of a suspension into a channel
journal, June 1969
- Stukel, J. J.; Soo, S. L.
- Powder Technology, Vol. 2, Issue 5
Particle fraction and velocity measurement in gas-powder streams by capacitance transducers
journal, June 1983
- Irons, G. A.; Chang, J. S.
- International Journal of Multiphase Flow, Vol. 9, Issue 3